bjoernager/rust
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Auto merge of #120619 - compiler-errors:param, r=lcnr

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Assert that params with the same *index* have the same *name*

Found this bug when trying to build libcore with the new solver, since it will canonicalize two params with the same index into *different* placeholders if those params differ by name.
This commit is contained in:
bors 2024-02-11 22:13:52 +00:00
commit 520b0b20aa
10 changed files with 90 additions and 41 deletions
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4
compiler/rustc_ty_utils/src/instance.rs
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@ -209,10 +209,8 @@ fn resolve_associated_item<'tcx>(
let name = tcx.item_name(trait_item_id);
if name == sym::clone {
let self_ty = trait_ref.self_ty();
let is_copy = self_ty.is_copy_modulo_regions(tcx, param_env);
match self_ty.kind() {
_ if is_copy => (),
ty::FnDef(..) | ty::FnPtr(_) => (),
ty::Coroutine(..)
| ty::CoroutineWitness(..)
| ty::Closure(..)